How severe is CVE-2020-26146?

CVE-2020-26146 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-26146 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26146?

CVE-2020-26146 primarily affects Samsung Galaxy I9305 Firmware. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-26146?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-26146 published?

CVE-2020-26146 was published on 2021-05-11 and last updated on 2026-06-17.

CVE-2020-26146

CVE-2020-26146 is a medium-severity vulnerability in Samsung Galaxy I9305 Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 2.9
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Samsung Galaxy I9305 Firmware
Published: 2021-05-11
Last modified: 2026-06-17

Description

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.

Frequently asked questions

What is CVE-2020-26146?: An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.
How severe is CVE-2020-26146?: CVE-2020-26146 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-26146 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26146?: CVE-2020-26146 primarily affects Samsung Galaxy I9305 Firmware. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-26146?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26146 published?: CVE-2020-26146 was published on 2021-05-11 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:o:samsung:galaxy_i9305_firmware:4.4.4:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-250_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-260_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-230_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-235_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-120_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-130_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-110_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:o-105_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:w-118_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-75_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:o-90_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:c-65_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arista:w-68_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w700_ieee_802.11n_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w1700_ieee_802.11ac_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_w1750d_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Samsung Galaxy I9305 Firmware

CVE-2020-26145 — Medium (CVSS 6.5): An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept…
CVE-2020-26144 — Medium (CVSS 6.5): An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept…

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